A steam-powered passenger train heads north toward Center, Colorado, with Illinois Central observation “Mardi Gras” carrying the markers. Celebrating the 100 year anniversary of the San Luis Central, the railroad operated a special passenger train on the 13-mile line north from Monte Vista in Colorado’s San Luis Valley. To help with celebrations, neighbor San Luis and Rio Grande relettered and renumbered their 2-8-0 No. 18, to SLC No. 1, that pulled the train on September 1, 2013.